/*
 * UAE - The Un*x Amiga Emulator
 *
 * MC68000 emulation generator
 *
 * This is a fairly stupid program that generates a lot of case labels that
 * can be #included in a switch statement.
 * As an alternative, it can generate functions that handle specific
 * MC68000 instructions, plus a prototype header file and a function pointer
 * array to look up the function for an opcode.
 * Error checking is bad, an illegal table68k file will cause the program to
 * call abort().
 * The generated code is sometimes sub-optimal, an optimizing compiler should
 * take care of this.
 *
 * Copyright 1995, 1996 Bernd Schmidt
 */

#include "sysconfig.h"
#include "sysdeps.h"
#include <ctype.h>

#include "options.h"
#include "readcpu.h"

#define BOOL_TYPE "int"

static FILE* headerfile;
static FILE* stblfile;

static int using_prefetch;
static int using_exception_3;
static int cpu_level;

/* For the current opcode, the next lower level that will have different code.
 * Initialized to -1 for each opcode. If it remains unchanged, indicates we
 * are done with that opcode.  */
static int next_cpu_level;

void write_log(const char* s, ...)
{
    fprintf(stderr, "%s", s);
}

static int* opcode_map;
static int* opcode_next_clev;
static int* opcode_last_postfix;
static unsigned long* counts;

static void read_counts(void)
{
    FILE* file;
    unsigned long opcode, count, total;
    char name[20];
    int nr = 0;
    memset(counts, 0, 65536 * sizeof *counts);

    file = fopen("frequent.68k", "r");
    if (file)
    {
        fscanf(file, "Total: %lu\n", &total);
        while (fscanf(file, "%lx: %lu %s\n", &opcode, &count, name) == 3)
        {
            opcode_next_clev[nr] = 3;
            opcode_last_postfix[nr] = -1;
            opcode_map[nr++] = opcode;
            counts[opcode] = count;
        }
        fclose(file);
    }
    if (nr == nr_cpuop_funcs)
        return;
    for (opcode = 0; opcode < 0x10000; opcode++)
    {
        if (table68k[opcode].handler == -1 && table68k[opcode].mnemo != i_ILLG
            && counts[opcode] == 0)
        {
            opcode_next_clev[nr] = 3;
            opcode_last_postfix[nr] = -1;
            opcode_map[nr++] = opcode;
            counts[opcode] = count;
        }
    }
    if (nr != nr_cpuop_funcs)
        abort();
}

static char endlabelstr[80];
static int endlabelno = 0;
static int need_endlabel;

static int n_braces = 0;
static int m68k_pc_offset = 0;
static int insn_n_cycles;

static void start_brace(void)
{
    n_braces++;
    printf("{");
}

static void close_brace(void)
{
    assert(n_braces > 0);
    n_braces--;
    printf("}");
}

static void finish_braces(void)
{
    while (n_braces > 0)
        close_brace();
}

static void pop_braces(int to)
{
    while (n_braces > to)
        close_brace();
}

static int bit_size(int size)
{
    switch (size)
    {
        case sz_byte: return 8;
        case sz_word: return 16;
        case sz_long: return 32;
        default: abort();
    }
    return 0;
}

static const char* bit_mask(int size)
{
    switch (size)
    {
        case sz_byte: return "0xff";
        case sz_word: return "0xffff";
        case sz_long: return "0xffffffff";
        default: abort();
    }
    return NULL;
}

static const char* gen_nextilong(void)
{
    static char buffer[80];
    int r = m68k_pc_offset;
    m68k_pc_offset += 4;

    insn_n_cycles += 4;

    if (using_prefetch)
        sprintf(buffer, "get_ilong_prefetch(%d)", r);
    else
        sprintf(buffer, "get_ilong(%d)", r);
    return buffer;
}

static const char* gen_nextiword(void)
{
    static char buffer[80];
    int r = m68k_pc_offset;
    m68k_pc_offset += 2;

    insn_n_cycles += 2;

    if (using_prefetch)
        sprintf(buffer, "get_iword_prefetch(%d)", r);
    else
        sprintf(buffer, "get_iword(%d)", r);
    return buffer;
}

static const char* gen_nextibyte(void)
{
    static char buffer[80];
    int r = m68k_pc_offset;
    m68k_pc_offset += 2;

    insn_n_cycles += 2;

    if (using_prefetch)
        sprintf(buffer, "get_ibyte_prefetch(%d)", r);
    else
        sprintf(buffer, "get_ibyte(%d)", r);
    return buffer;
}

static void fill_prefetch_0(void)
{
    if (using_prefetch)
        printf("fill_prefetch_0 ();\n");
}

static void fill_prefetch_2(void)
{
    if (using_prefetch)
        printf("fill_prefetch_2 ();\n");
}

static void swap_opcode(void)
{
    printf("#ifdef HAVE_GET_WORD_UNSWAPPED\n");
    printf("\topcode = ((opcode << 8) & 0xFF00) | ((opcode >> 8) & 0xFF);\n");
    printf("#endif\n");
}

static void sync_m68k_pc(void)
{
    if (m68k_pc_offset == 0)
        return;
    printf("m68k_incpc(%d);\n", m68k_pc_offset);
    switch (m68k_pc_offset)
    {
        case 0:
            /*fprintf (stderr, "refilling prefetch at 0\n"); */
            break;
        case 2:
            fill_prefetch_2();
            break;
        default:
            fill_prefetch_0();
            break;
    }
    m68k_pc_offset = 0;
}

/* getv == 1: fetch data; getv != 0: check for odd address. If movem != 0,
 * the calling routine handles Apdi and Aipi modes. */
static void genamode(amodes mode, char* reg, wordsizes size, char* name, int getv, int movem)
{
    start_brace();
    switch (mode)
    {
        case Dreg:
            if (movem)
                abort();
            if (getv == 1)
                switch (size)
                {
                    case sz_byte:
#ifdef AMIGA
                        /* sam: I don't know why gcc.2.7.2.1 produces a code worse */
                        /* if it is not done like that: */
                        printf("\tuae_s8 %s = ((uae_u8*)&m68k_dreg(regs, %s))[3];\n", name, reg);
#else
                        printf("\tuae_s8 %s = m68k_dreg(regs, %s);\n", name, reg);
#endif
                        break;
                    case sz_word:
#ifdef AMIGA
                        printf("\tuae_s16 %s = ((uae_s16*)&m68k_dreg(regs, %s))[1];\n", name, reg);
#else
                        printf("\tuae_s16 %s = m68k_dreg(regs, %s);\n", name, reg);
#endif
                        break;
                    case sz_long:
                        printf("\tuae_s32 %s = m68k_dreg(regs, %s);\n", name, reg);
                        break;
                    default:
                        abort();
                }
            return;
        case Areg:
            if (movem)
                abort();
            if (getv == 1)
                switch (size)
                {
                    case sz_word:
                        printf("\tuae_s16 %s = m68k_areg(regs, %s);\n", name, reg);
                        break;
                    case sz_long:
                        printf("\tuae_s32 %s = m68k_areg(regs, %s);\n", name, reg);
                        break;
                    default:
                        abort();
                }
            return;
        case Aind:
            printf("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
            break;
        case Aipi:
            printf("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
            break;
        case Apdi:
            switch (size)
            {
                case sz_byte:
                    if (movem)
                        printf("\tuaecptr %sa = m68k_areg(regs, %s);\n", name, reg);
                    else
                        printf("\tuaecptr %sa = m68k_areg(regs, %s) - areg_byteinc[%s];\n", name, reg, reg);
                    break;
                case sz_word:
                    printf("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 2);
                    break;
                case sz_long:
                    printf("\tuaecptr %sa = m68k_areg(regs, %s) - %d;\n", name, reg, movem ? 0 : 4);
                    break;
                default:
                    abort();
            }
            break;
        case Ad16:
            printf("\tuaecptr %sa = m68k_areg(regs, %s) + (uae_s32)(uae_s16)%s;\n", name, reg, gen_nextiword());
            break;
        case Ad8r:
            if (cpu_level > 1)
            {
                if (next_cpu_level < 1)
                    next_cpu_level = 1;
                sync_m68k_pc();
                start_brace();
                printf("\tuaecptr %sa = get_disp_ea_020(m68k_areg(regs, %s), next_iword());\n", name, reg);
            }
            else
                printf("\tuaecptr %sa = get_disp_ea_000(m68k_areg(regs, %s), %s);\n", name, reg, gen_nextiword());

            break;
        case PC16:
            printf("\tuaecptr %sa = m68k_getpc () + %d;\n", name, m68k_pc_offset);
            printf("\t%sa += (uae_s32)(uae_s16)%s;\n", name, gen_nextiword());
            break;
        case PC8r:
            if (cpu_level > 1)
            {
                if (next_cpu_level < 1)
                    next_cpu_level = 1;
                sync_m68k_pc();
                start_brace();
                printf("\tuaecptr tmppc = m68k_getpc();\n");
                printf("\tuaecptr %sa = get_disp_ea_020(tmppc, next_iword());\n", name);
            }
            else
            {
                printf("\tuaecptr tmppc = m68k_getpc() + %d;\n", m68k_pc_offset);
                printf("\tuaecptr %sa = get_disp_ea_000(tmppc, %s);\n", name, gen_nextiword());
            }

            break;
        case absw:
            printf("\tuaecptr %sa = (uae_s32)(uae_s16)%s;\n", name, gen_nextiword());
            break;
        case absl:
            printf("\tuaecptr %sa = %s;\n", name, gen_nextilong());
            break;
        case imm:
            if (getv != 1)
                abort();
            switch (size)
            {
                case sz_byte:
                    printf("\tuae_s8 %s = %s;\n", name, gen_nextibyte());
                    break;
                case sz_word:
                    printf("\tuae_s16 %s = %s;\n", name, gen_nextiword());
                    break;
                case sz_long:
                    printf("\tuae_s32 %s = %s;\n", name, gen_nextilong());
                    break;
                default:
                    abort();
            }
            return;
        case imm0:
            if (getv != 1)
                abort();
            printf("\tuae_s8 %s = %s;\n", name, gen_nextibyte());
            return;
        case imm1:
            if (getv != 1)
                abort();
            printf("\tuae_s16 %s = %s;\n", name, gen_nextiword());
            return;
        case imm2:
            if (getv != 1)
                abort();
            printf("\tuae_s32 %s = %s;\n", name, gen_nextilong());
            return;
        case immi:
            if (getv != 1)
                abort();
            printf("\tuae_u32 %s = %s;\n", name, reg);
            return;
        default:
            abort();
    }

    /* We get here for all non-reg non-immediate addressing modes to
     * actually fetch the value. */

    if (using_exception_3 && getv != 0 && size != sz_byte)
    {
        printf("\tif ((%sa & 1) != 0) {\n", name);
        printf("\t\tlast_fault_for_exception_3 = %sa;\n", name);
        printf("\t\tlast_op_for_exception_3 = opcode;\n");
        printf("\t\tlast_addr_for_exception_3 = m68k_getpc() + %d;\n", m68k_pc_offset);
        printf("\t\tException(3, 0);\n");
        printf("\t\tgoto %s;\n", endlabelstr);
        printf("\t}\n");
        need_endlabel = 1;
        start_brace();
    }

    if (getv == 1)
    {
        switch (size)
        {
            case sz_byte: insn_n_cycles += 2;
                break;
            case sz_word: insn_n_cycles += 2;
                break;
            case sz_long: insn_n_cycles += 4;
                break;
            default: abort();
        }
        start_brace();
        switch (size)
        {
            case sz_byte: printf("\tuae_s8 %s = get_byte(%sa);\n", name, name);
                break;
            case sz_word: printf("\tuae_s16 %s = get_word(%sa);\n", name, name);
                break;
            case sz_long: printf("\tuae_s32 %s = get_long(%sa);\n", name, name);
                break;
            default: abort();
        }
    }

    /* We now might have to fix up the register for pre-dec or post-inc
     * addressing modes. */
    if (!movem)
        switch (mode)
        {
            case Aipi:
                switch (size)
                {
                    case sz_byte:
                        printf("\tm68k_areg(regs, %s) += areg_byteinc[%s];\n", reg, reg);
                        break;
                    case sz_word:
                        printf("\tm68k_areg(regs, %s) += 2;\n", reg);
                        break;
                    case sz_long:
                        printf("\tm68k_areg(regs, %s) += 4;\n", reg);
                        break;
                    default:
                        abort();
                }
                break;
            case Apdi:
                printf("\tm68k_areg (regs, %s) = %sa;\n", reg, name);
                break;
            default:
                break;
        }
}

static void genastore(char* from, amodes mode, char* reg, wordsizes size, char* to)
{
    switch (mode)
    {
        case Dreg:
            switch (size)
            {
                case sz_byte:
                    printf("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xff) | ((%s) & 0xff);\n", reg, reg, from);
                    break;
                case sz_word:
                    printf("\tm68k_dreg(regs, %s) = (m68k_dreg(regs, %s) & ~0xffff) | ((%s) & 0xffff);\n", reg, reg, from);
                    break;
                case sz_long:
                    printf("\tm68k_dreg(regs, %s) = (%s);\n", reg, from);
                    break;
                default:
                    abort();
            }
            break;
        case Areg:
            switch (size)
            {
                case sz_word:
                    fprintf(stderr, "Foo\n");
                    printf("\tm68k_areg(regs, %s) = (uae_s32)(uae_s16)(%s);\n", reg, from);
                    break;
                case sz_long:
                    printf("\tm68k_areg(regs, %s) = (%s);\n", reg, from);
                    break;
                default:
                    abort();
            }
            break;
        case Aind:
        case Aipi:
        case Apdi:
        case Ad16:
        case Ad8r:
        case absw:
        case absl:
        case PC16:
        case PC8r:
            if (using_prefetch)
                sync_m68k_pc();
            switch (size)
            {
                case sz_byte:
                    insn_n_cycles += 2;
                    printf("\tput_byte(%sa,%s);\n", to, from);
                    break;
                case sz_word:
                    insn_n_cycles += 2;
                    if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
                        abort();
                    printf("\tput_word(%sa,%s);\n", to, from);
                    break;
                case sz_long:
                    insn_n_cycles += 4;
                    if (cpu_level < 2 && (mode == PC16 || mode == PC8r))
                        abort();
                    printf("\tput_long(%sa,%s);\n", to, from);
                    break;
                default:
                    abort();
            }
            break;
        case imm:
        case imm0:
        case imm1:
        case imm2:
        case immi:
            abort();
            break;
        default:
            abort();
    }
}

static void genmovemel(uae_u16 opcode)
{
    char getcode[100];
    int size = table68k[opcode].size == sz_long ? 4 : 2;

    if (table68k[opcode].size == sz_long)
    {
        strcpy(getcode, "get_long(srca)");
    }
    else
    {
        strcpy(getcode, "(uae_s32)(uae_s16)get_word(srca)");
    }

    printf("\tuae_u16 mask = %s;\n", gen_nextiword());
    printf("\tunsigned int dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
    genamode(table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
    start_brace();
    printf("\twhile (dmask) { m68k_dreg(regs, movem_index1[dmask]) = %s; srca += %d; dmask = movem_next[dmask]; }\n",
        getcode, size);
    printf("\twhile (amask) { m68k_areg(regs, movem_index1[amask]) = %s; srca += %d; amask = movem_next[amask]; }\n",
        getcode, size);

    if (table68k[opcode].dmode == Aipi)
        printf("\tm68k_areg(regs, dstreg) = srca;\n");
}

static void genmovemle(uae_u16 opcode)
{
    char putcode[100];
    int size = table68k[opcode].size == sz_long ? 4 : 2;
    if (table68k[opcode].size == sz_long)
    {
        strcpy(putcode, "put_long(srca,");
    }
    else
    {
        strcpy(putcode, "put_word(srca,");
    }

    printf("\tuae_u16 mask = %s;\n", gen_nextiword());
    genamode(table68k[opcode].dmode, "dstreg", table68k[opcode].size, "src", 2, 1);
    if (using_prefetch)
        sync_m68k_pc();

    start_brace();
    if (table68k[opcode].dmode == Apdi)
    {
        printf("\tuae_u16 amask = mask & 0xff, dmask = (mask >> 8) & 0xff;\n");
        printf("\twhile (amask) { srca -= %d; %s m68k_areg(regs, movem_index2[amask])); amask = movem_next[amask]; }\n",
            size, putcode);
        printf("\twhile (dmask) { srca -= %d; %s m68k_dreg(regs, movem_index2[dmask])); dmask = movem_next[dmask]; }\n",
            size, putcode);
        printf("\tm68k_areg(regs, dstreg) = srca;\n");
    }
    else
    {
        printf("\tuae_u16 dmask = mask & 0xff, amask = (mask >> 8) & 0xff;\n");
        printf("\twhile (dmask) { %s m68k_dreg(regs, movem_index1[dmask])); srca += %d; dmask = movem_next[dmask]; }\n",
            putcode, size);
        printf("\twhile (amask) { %s m68k_areg(regs, movem_index1[amask])); srca += %d; amask = movem_next[amask]; }\n",
            putcode, size);
    }
}

static void duplicate_carry(void)
{
    printf("\tCOPY_CARRY;\n");
}

typedef enum
{
    flag_logical_noclobber, flag_logical, flag_add, flag_sub, flag_cmp, flag_addx, flag_subx, flag_zn,
    flag_av, flag_sv
} flagtypes;

static void genflags_normal(flagtypes type, wordsizes size, char* value, char* src, char* dst)
{
    char vstr[100], sstr[100], dstr[100];
    char usstr[100], udstr[100];
    char unsstr[100], undstr[100];

    switch (size)
    {
        case sz_byte:
            strcpy(vstr, "((uae_s8)(");
            strcpy(usstr, "((uae_u8)(");
            break;
        case sz_word:
            strcpy(vstr, "((uae_s16)(");
            strcpy(usstr, "((uae_u16)(");
            break;
        case sz_long:
            strcpy(vstr, "((uae_s32)(");
            strcpy(usstr, "((uae_u32)(");
            break;
        default:
            abort();
    }
    strcpy(unsstr, usstr);

    strcpy(sstr, vstr);
    strcpy(dstr, vstr);
    strcat(vstr, value);
    strcat(vstr, "))");
    strcat(dstr, dst);
    strcat(dstr, "))");
    strcat(sstr, src);
    strcat(sstr, "))");

    strcpy(udstr, usstr);
    strcat(udstr, dst);
    strcat(udstr, "))");
    strcat(usstr, src);
    strcat(usstr, "))");

    strcpy(undstr, unsstr);
    strcat(unsstr, "-");
    strcat(undstr, "~");
    strcat(undstr, dst);
    strcat(undstr, "))");
    strcat(unsstr, src);
    strcat(unsstr, "))");

    switch (type)
    {
        case flag_logical_noclobber:
        case flag_logical:
        case flag_zn:
        case flag_av:
        case flag_sv:
        case flag_addx:
        case flag_subx:
            break;

        case flag_add:
            start_brace();
            printf("uae_u32 %s = %s + %s;\n", value, dstr, sstr);
            break;
        case flag_sub:
        case flag_cmp:
            start_brace();
            printf("uae_u32 %s = %s - %s;\n", value, dstr, sstr);
            break;
    }

    switch (type)
    {
        case flag_logical_noclobber:
        case flag_logical:
        case flag_zn:
            break;

        case flag_add:
        case flag_sub:
        case flag_addx:
        case flag_subx:
        case flag_cmp:
        case flag_av:
        case flag_sv:
            start_brace();
            printf("\t" BOOL_TYPE " flgs = %s < 0;\n", sstr);
            printf("\t" BOOL_TYPE " flgo = %s < 0;\n", dstr);
            printf("\t" BOOL_TYPE " flgn = %s < 0;\n", vstr);
            break;
    }

    switch (type)
    {
        case flag_logical:
            printf("\tCLEAR_CZNV;\n");
            printf("\tSET_ZFLG (%s == 0);\n", vstr);
            printf("\tSET_NFLG (%s < 0);\n", vstr);
            break;
        case flag_logical_noclobber:
            printf("\tSET_ZFLG (%s == 0);\n", vstr);
            printf("\tSET_NFLG (%s < 0);\n", vstr);
            break;
        case flag_av:
            printf("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
            break;
        case flag_sv:
            printf("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
            break;
        case flag_zn:
            printf("\tSET_ZFLG (GET_ZFLG & (%s == 0));\n", vstr);
            printf("\tSET_NFLG (%s < 0);\n", vstr);
            break;
        case flag_add:
            printf("\tSET_ZFLG (%s == 0);\n", vstr);
            printf("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n");
            printf("\tSET_CFLG (%s < %s);\n", undstr, usstr);
            duplicate_carry();
            printf("\tSET_NFLG (flgn != 0);\n");
            break;
        case flag_sub:
            printf("\tSET_ZFLG (%s == 0);\n", vstr);
            printf("\tSET_VFLG ((flgs ^ flgo) & (flgn ^ flgo));\n");
            printf("\tSET_CFLG (%s > %s);\n", usstr, udstr);
            printf("\tSET_NFLG (flgn != 0);\n");
            break;
        case flag_addx:
            printf("\tSET_VFLG ((flgs ^ flgn) & (flgo ^ flgn));\n"); /* minterm SON: 0x42 */
            printf("\tSET_CFLG (flgs ^ ((flgs ^ flgo) & (flgo ^ flgn)));\n"); /* minterm SON: 0xD4 */
            duplicate_carry();
            break;
        case flag_subx:
            printf("\tSET_VFLG ((flgs ^ flgo) & (flgo ^ flgn));\n"); /* minterm SON: 0x24 */
            printf("\tSET_CFLG (flgs ^ ((flgs ^ flgn) & (flgo ^ flgn)));\n"); /* minterm SON: 0xB2 */
            duplicate_carry();
            break;
        case flag_cmp:
            printf("\tSET_ZFLG (%s == 0);\n", vstr);
            printf("\tSET_VFLG ((flgs != flgo) && (flgn != flgo));\n");
            printf("\tSET_CFLG (%s > %s);\n", usstr, udstr);
            printf("\tSET_NFLG (flgn != 0);\n");
            break;
    }
}

static void genflags(flagtypes type, wordsizes size, char* value, char* src, char* dst)
{
#ifdef X86_ASSEMBLY
    switch (type)
    {
        case flag_add:
        case flag_sub:
            start_brace();
            printf("\tuae_u32 %s;\n", value);
            break;

        default:
            break;
    }

    /* At least some of those casts are fairly important! */
    switch (type)
    {
        case flag_logical_noclobber:
            printf("\t{uae_u32 oldcznv = regflags.cznv & ~0xC0;\n");
            if (strcmp(value, "0") == 0)
            {
                printf("\tregflags.cznv = olcznv | 64;\n");
            }
            else
            {
                switch (size)
                {
                    case sz_byte: printf("\tx86_flag_testb ((uae_s8)(%s));\n", value);
                        break;
                    case sz_word: printf("\tx86_flag_testw ((uae_s16)(%s));\n", value);
                        break;
                    case sz_long: printf("\tx86_flag_testl ((uae_s32)(%s));\n", value);
                        break;
                }
                printf("\tregflags.cznv |= oldcznv;\n");
            }
            printf("\t}\n");
            return;
        case flag_logical:
            if (strcmp(value, "0") == 0)
            {
                printf("\tregflags.cznv = 64;\n");
            }
            else
            {
                switch (size)
                {
                    case sz_byte: printf("\tx86_flag_testb ((uae_s8)(%s));\n", value);
                        break;
                    case sz_word: printf("\tx86_flag_testw ((uae_s16)(%s));\n", value);
                        break;
                    case sz_long: printf("\tx86_flag_testl ((uae_s32)(%s));\n", value);
                        break;
                }
            }
            return;

        case flag_add:
            switch (size)
            {
                case sz_byte: printf("\tx86_flag_addb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst);
                    break;
                case sz_word: printf("\tx86_flag_addw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst);
                    break;
                case sz_long: printf("\tx86_flag_addl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst);
                    break;
            }
            return;

        case flag_sub:
            switch (size)
            {
                case sz_byte: printf("\tx86_flag_subb (%s, (uae_s8)(%s), (uae_s8)(%s));\n", value, src, dst);
                    break;
                case sz_word: printf("\tx86_flag_subw (%s, (uae_s16)(%s), (uae_s16)(%s));\n", value, src, dst);
                    break;
                case sz_long: printf("\tx86_flag_subl (%s, (uae_s32)(%s), (uae_s32)(%s));\n", value, src, dst);
                    break;
            }
            return;

        case flag_cmp:
            switch (size)
            {
                case sz_byte: printf("\tx86_flag_cmpb ((uae_s8)(%s), (uae_s8)(%s));\n", src, dst);
                    break;
                case sz_word: printf("\tx86_flag_cmpw ((uae_s16)(%s), (uae_s16)(%s));\n", src, dst);
                    break;
                case sz_long: printf("\tx86_flag_cmpl ((uae_s32)(%s), (uae_s32)(%s));\n", src, dst);
                    break;
            }
            return;

        default:
            break;
    }
#elif defined(M68K_FLAG_OPT)
    /* sam: here I'm cloning what X86_ASSEMBLY does */
#define EXT(size)  (size == sz_byte ? "b" : (size == sz_word ? "w" : "l"))
#define CAST(size) (size == sz_byte ? "uae_s8" : (size == sz_word ? "uae_s16" : "uae_s32"))
    switch (type)
    {
        case flag_add:
        case flag_sub:
            start_brace();
            printf("\tuae_u32 %s;\n", value);
            break;

        default:
            break;
    }

    switch (type)
    {
        case flag_logical:
            if (strcmp(value, "0") == 0)
            {
                printf("\t*(uae_u16 *)&regflags = 4;\n"); /* Z = 1 */
            }
            else
            {
                printf("\tm68k_flag_tst (%s, (%s)(%s));\n",
                EXT(size), CAST(size), value);
            }
            return;

        case flag_add:
            printf("\t{uae_u16 ccr;\n");
            printf("\tm68k_flag_add (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
            EXT(size), CAST(size), value, CAST(size), src, CAST(size), dst);
            printf("\t((uae_u16*)&regflags)[1]=((uae_u16*)&regflags)[0]=ccr;}\n");
            return;

        case flag_sub:
            printf("\t{uae_u16 ccr;\n");
            printf("\tm68k_flag_sub (%s, (%s)%s, (%s)(%s), (%s)(%s));\n",
            EXT(size), CAST(size), value, CAST(size), src, CAST(size), dst);
            printf("\t((uae_u16*)&regflags)[1]=((uae_u16*)&regflags)[0]=ccr;}\n");
            return;

        case flag_cmp:
            printf("\tm68k_flag_cmp (%s, (%s)(%s), (%s)(%s));\n",
            EXT(size), CAST(size), src, CAST(size), dst);
            return;

        default:
            break;
    }
#elif defined(ACORN_FLAG_OPT) && defined(__GNUC_MINOR__)
    /*
     * This is new. Might be quite buggy.
     */
    switch (type)
    {
        case flag_av:
        case flag_sv:
        case flag_zn:
        case flag_addx:
        case flag_subx:
            break;

        case flag_logical:
            if (strcmp(value, "0") == 0)
            {
                /* v=c=n=0 z=1 */
                printf("\t*(ULONG*)&regflags = 0x40000000;\n");
                return;
            }
            else
            {
                start_brace();
                switch (size)
                {
                    case sz_byte:
                        printf("\tUBYTE ccr;\n");
                        printf("\tULONG shift;\n");
                        printf("\t__asm__(\"mov %%2,%%1,lsl#24\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
                    "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value);
                        printf("\t*((UBYTE*)&regflags+3) = ccr;\n");
                        return;
                    case sz_word:
                        printf("\tUBYTE ccr;\n");
                        printf("\tULONG shift;\n");
                        printf("\t__asm__(\"mov %%2,%%1,lsl#16\n\ttst %%2,%%2\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
                    "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value);
                        printf("\t*((UBYTE*)&regflags+3) = ccr;\n");
                        return;
                    case sz_long:
                        printf("\tUBYTE ccr;\n");
                        printf("\t__asm__(\"tst %%1,%%1\n\tmov %%0,r15,lsr#24\n\tbic %%0,%%0,#0x30\"\n"
                    "\t: \"=r\" (ccr) : \"r\" ((LONG)%s) : \"cc\" );\n", value);
                        printf("\t*((UBYTE*)&regflags+3) = ccr;\n");
                        return;
                }
            }
            break;
        case flag_add:
            if (strcmp(dst, "0") == 0)
            {
                printf("/* Error! Hier muss Peter noch was machen !!! (ADD-Flags) */");
            }
            else
            {
                start_brace();
                switch (size)
                {
                    case sz_byte:
                        printf("\tULONG ccr, shift, %s;\n", value);
                        printf("\t__asm__(\"mov %%4,%%3,lsl#24\n\tadds %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
                    "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
                        printf("\t*(ULONG*)&regflags = ccr;\n");
                        return;
                    case sz_word:
                        printf("\tULONG ccr, shift, %s;\n", value);
                        printf("\t__asm__(\"mov %%4,%%3,lsl#16\n\tadds %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
                    "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
                        printf("\t*(ULONG*)&regflags = ccr;\n");
                        return;
                    case sz_long:
                        printf("\tULONG ccr, %s;\n", value);
                        printf("\t__asm__(\"adds %%0,%%3,%%2\n\tmov %%1,r15\n\torr %%1,%%1,%%1,lsr#29\"\n"
                    "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
                        printf("\t*(ULONG*)&regflags = ccr;\n");
                        return;
                }
            }
            break;
        case flag_sub:
            if (strcmp(dst, "0") == 0)
            {
                printf("/* Error! Hier muss Peter noch was machen !!! (SUB-Flags) */");
            }
            else
            {
                start_brace();
                switch (size)
                {
                    case sz_byte:
                        printf("\tULONG ccr, shift, %s;\n", value);
                        printf("\t__asm__(\"mov %%4,%%3,lsl#24\n\tsubs %%0,%%4,%%2,lsl#24\n\tmov %%0,%%0,asr#24\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
                    "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
                        printf("\t*(ULONG*)&regflags = ccr;\n");
                        return;
                    case sz_word:
                        printf("\tULONG ccr, shift, %s;\n", value);
                        printf("\t__asm__(\"mov %%4,%%3,lsl#16\n\tsubs %%0,%%4,%%2,lsl#16\n\tmov %%0,%%0,asr#16\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
                    "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", value, src, dst);
                        printf("\t*(ULONG*)&regflags = ccr;\n");
                        return;
                    case sz_long:
                        printf("\tULONG ccr, %s;\n", value);
                        printf("\t__asm__(\"subs %%0,%%3,%%2\n\tmov %%1,r15\n\teor %%1,%%1,#0x20000000\n\torr %%1,%%1,%%1,lsr#29\"\n"
                    "\t: \"=r\" (%s), \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", value, src, dst);
                        printf("\t*(ULONG*)&regflags = ccr;\n");
                        return;
                }
            }
            break;
        case flag_cmp:
            if (strcmp(dst, "0") == 0)
            {
                printf("/*Error! Hier muss Peter noch was machen !!! (CMP-Flags)*/");
            }
            else
            {
                start_brace();
                switch (size)
                {
                    case sz_byte:
                        printf("\tULONG shift, ccr;\n");
                        printf("\t__asm__(\"mov %%3,%%2,lsl#24\n\tcmp %%3,%%1,lsl#24\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
                    "\t: \"=r\" (ccr) : \"r\" (%s), \"r\" (%s), \"r\" (shift) : \"cc\" );\n", src, dst);
                        printf("\t*((UBYTE*)&regflags+3) = ccr;\n");
                        return;
                    case sz_word:
                        printf("\tULONG shift, ccr;\n");
                        printf("\t__asm__(\"mov %%3,%%2,lsl#16\n\tcmp %%3,%%1,lsl#16\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
                    "\t: \"=r\" (ccr) : \"r\" ((WORD)%s), \"r\" ((WORD)%s), \"r\" (shift) : \"cc\" );\n", src, dst);
                        printf("\t*((UBYTE*)&regflags+3) = ccr;\n");
                        return;
                    case sz_long:
                        printf("\tULONG ccr;\n");
                        printf("\t__asm__(\"cmp %%2,%%1\n\tmov %%0,r15,lsr#24\n\teor %%0,%%0,#0x20\"\n"
                    "\t: \"=r\" (ccr) : \"r\" ((LONG)%s), \"r\" ((LONG)%s) : \"cc\" );\n", src, dst);
                        printf("\t*((UBYTE*)&regflags+3) = ccr;\n");
                        /*printf ("\tprintf (\"%%08x %%08x %%08x\\n\", %s, %s, *((ULONG*)&regflags));\n", src, dst); */
                        return;
                }
            }
            break;
    }
#endif
    genflags_normal(type, size, value, src, dst);
}

static void force_range_for_rox(const char* var, wordsizes size)
{
    /* Could do a modulo operation here... which one is faster? */
    switch (size)
    {
        case sz_long:
            printf("\tif (%s >= 33) %s -= 33;\n", var, var);
            break;
        case sz_word:
            printf("\tif (%s >= 34) %s -= 34;\n", var, var);
            printf("\tif (%s >= 17) %s -= 17;\n", var, var);
            break;
        case sz_byte:
            printf("\tif (%s >= 36) %s -= 36;\n", var, var);
            printf("\tif (%s >= 18) %s -= 18;\n", var, var);
            printf("\tif (%s >= 9) %s -= 9;\n", var, var);
            break;
    }
}

static const char* cmask(wordsizes size)
{
    switch (size)
    {
        case sz_byte: return "0x80";
        case sz_word: return "0x8000";
        case sz_long: return "0x80000000";
        default: abort();
    }
}

static int source_is_imm1_8(struct instr* i)
{
    return i->stype == 3;
}

static void gen_opcode(unsigned long int opcode)
{
    struct instr* curi = table68k + opcode;
    insn_n_cycles = 2;

    start_brace();
#if 0
    printf("uae_u8 *m68k_pc = regs.pc_p;\n");
#endif
    m68k_pc_offset = 2;
    switch (curi->plev)
    {
        case 0: /* not privileged */
            break;
        case 1: /* unprivileged only on 68000 */
            if (cpu_level == 0)
                break;
            if (next_cpu_level < 0)
                next_cpu_level = 0;

        /* fall through */
        case 2: /* priviledged */
            printf("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
            need_endlabel = 1;
            start_brace();
            break;
        case 3: /* privileged if size == word */
            if (curi->size == sz_byte)
                break;
            printf("if (!regs.s) { Exception(8,0); goto %s; }\n", endlabelstr);
            need_endlabel = 1;
            start_brace();
            break;
    }
    switch (curi->mnemo)
    {
        case i_OR:
        case i_AND:
        case i_EOR:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            printf("\tsrc %c= dst;\n", curi->mnemo == i_OR ? '|' : curi->mnemo == i_AND ? '&' : '^');
            genflags(flag_logical, curi->size, "src", "", "");
            genastore("src", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_ORSR:
        case i_EORSR:
            printf("\tMakeSR();\n");
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            if (curi->size == sz_byte)
            {
                printf("\tsrc &= 0xFF;\n");
            }
            printf("\tregs.sr %c= src;\n", curi->mnemo == i_EORSR ? '^' : '|');
            printf("\tMakeFromSR();\n");
            break;
        case i_ANDSR:
            printf("\tMakeSR();\n");
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            if (curi->size == sz_byte)
            {
                printf("\tsrc |= 0xFF00;\n");
            }
            printf("\tregs.sr &= src;\n");
            printf("\tMakeFromSR();\n");
            break;
        case i_SUB:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            genflags(flag_sub, curi->size, "newv", "src", "dst");
            genastore("newv", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_SUBA:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_long, "dst", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = dst - src;\n");
            genastore("newv", curi->dmode, "dstreg", sz_long, "dst");
            break;
        case i_SUBX:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = dst - src - (GET_XFLG ? 1 : 0);\n");
            genflags(flag_subx, curi->size, "newv", "src", "dst");
            genflags(flag_zn, curi->size, "newv", "", "");
            genastore("newv", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_SBCD:
            /* Let's hope this works... */
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            printf("\tuae_u16 newv_lo = (dst & 0xF) - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
            printf("\tuae_u16 newv_hi = (dst & 0xF0) - (src & 0xF0);\n");
            printf("\tuae_u16 newv;\n");
            printf("\tint cflg;\n");
            printf("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
            printf("\tnewv = newv_hi + (newv_lo & 0xF);");
            printf("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
            duplicate_carry();
            printf("\tif (cflg) newv -= 0x60;\n");
            genflags(flag_zn, curi->size, "newv", "", "");
            genflags(flag_sv, curi->size, "newv", "src", "dst");
            genastore("newv", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_ADD:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            genflags(flag_add, curi->size, "newv", "src", "dst");
            genastore("newv", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_ADDA:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_long, "dst", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = dst + src;\n");
            genastore("newv", curi->dmode, "dstreg", sz_long, "dst");
            break;
        case i_ADDX:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = dst + src + (GET_XFLG ? 1 : 0);\n");
            genflags(flag_addx, curi->size, "newv", "src", "dst");
            genflags(flag_zn, curi->size, "newv", "", "");
            genastore("newv", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_ABCD:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            printf("\tuae_u16 newv_lo = (src & 0xF) + (dst & 0xF) + (GET_XFLG ? 1 : 0);\n");
            printf("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n");
            printf("\tuae_u16 newv;\n");
            printf("\tint cflg;\n");
            printf("\tif (newv_lo > 9) { newv_lo +=6; }\n");
            printf("\tnewv = newv_hi + newv_lo;");
            printf("\tSET_CFLG (cflg = (newv & 0x1F0) > 0x90);\n");
            duplicate_carry();
            printf("\tif (cflg) newv += 0x60;\n");
            genflags(flag_zn, curi->size, "newv", "", "");
            genflags(flag_sv, curi->size, "newv", "src", "dst");
            genastore("newv", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_NEG:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            start_brace();
            genflags(flag_sub, curi->size, "dst", "src", "0");
            genastore("dst", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_NEGX:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = 0 - src - (GET_XFLG ? 1 : 0);\n");
            genflags(flag_subx, curi->size, "newv", "src", "0");
            genflags(flag_zn, curi->size, "newv", "", "");
            genastore("newv", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_NBCD:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            start_brace();
            printf("\tuae_u16 newv_lo = - (src & 0xF) - (GET_XFLG ? 1 : 0);\n");
            printf("\tuae_u16 newv_hi = - (src & 0xF0);\n");
            printf("\tuae_u16 newv;\n");
            printf("\tint cflg;\n");
            printf("\tif (newv_lo > 9) { newv_lo-=6; newv_hi-=0x10; }\n");
            printf("\tnewv = newv_hi + (newv_lo & 0xF);");
            printf("\tSET_CFLG (cflg = (newv_hi & 0x1F0) > 0x90);\n");
            printf("\tif (cflg) newv -= 0x60;\n");
            genflags(flag_zn, curi->size, "newv", "", "");
            genastore("newv", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_CLR:
            genamode(curi->smode, "srcreg", curi->size, "src", 2, 0);
            genflags(flag_logical, curi->size, "0", "", "");
            genastore("0", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_NOT:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            start_brace();
            printf("\tuae_u32 dst = ~src;\n");
            genflags(flag_logical, curi->size, "dst", "", "");
            genastore("dst", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_TST:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genflags(flag_logical, curi->size, "src", "", "");
            break;
        case i_BTST:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            if (curi->size == sz_byte)
                printf("\tsrc &= 7;\n");
            else
                printf("\tsrc &= 31;\n");
            printf("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
            break;
        case i_BCHG:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            if (curi->size == sz_byte)
                printf("\tsrc &= 7;\n");
            else
                printf("\tsrc &= 31;\n");
            printf("\tdst ^= (1 << src);\n");
            printf("\tSET_ZFLG ((dst & (1 << src)) >> src);\n");
            genastore("dst", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_BCLR:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            if (curi->size == sz_byte)
                printf("\tsrc &= 7;\n");
            else
                printf("\tsrc &= 31;\n");
            printf("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
            printf("\tdst &= ~(1 << src);\n");
            genastore("dst", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_BSET:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            if (curi->size == sz_byte)
                printf("\tsrc &= 7;\n");
            else
                printf("\tsrc &= 31;\n");
            printf("\tSET_ZFLG (1 ^ ((dst >> src) & 1));\n");
            printf("\tdst |= (1 << src);\n");
            genastore("dst", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_CMPM:
        case i_CMP:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            genflags(flag_cmp, curi->size, "newv", "src", "dst");
            break;
        case i_CMPA:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_long, "dst", 1, 0);
            start_brace();
            genflags(flag_cmp, sz_long, "newv", "src", "dst");
            break;
        /* The next two are coded a little unconventional, but they are doing
         * weird things... */
        case i_MVPRM:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);

            printf("\tuaecptr memp = m68k_areg(regs, dstreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword());
            if (curi->size == sz_word)
            {
                printf("\tput_byte(memp, src >> 8); put_byte(memp + 2, src);\n");
            }
            else
            {
                printf("\tput_byte(memp, src >> 24); put_byte(memp + 2, src >> 16);\n");
                printf("\tput_byte(memp + 4, src >> 8); put_byte(memp + 6, src);\n");
            }
            break;
        case i_MVPMR:
            printf("\tuaecptr memp = m68k_areg(regs, srcreg) + (uae_s32)(uae_s16)%s;\n", gen_nextiword());
            genamode(curi->dmode, "dstreg", curi->size, "dst", 2, 0);
            if (curi->size == sz_word)
            {
                printf("\tuae_u16 val = (get_byte(memp) << 8) + get_byte(memp + 2);\n");
            }
            else
            {
                printf("\tuae_u32 val = (get_byte(memp) << 24) + (get_byte(memp + 2) << 16)\n");
                printf("              + (get_byte(memp + 4) << 8) + get_byte(memp + 6);\n");
            }
            genastore("val", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_MOVE:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 2, 0);
            genflags(flag_logical, curi->size, "src", "", "");
            genastore("src", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_MOVEA:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 2, 0);
            if (curi->size == sz_word)
            {
                printf("\tuae_u32 val = (uae_s32)(uae_s16)src;\n");
            }
            else
            {
                printf("\tuae_u32 val = src;\n");
            }
            genastore("val", curi->dmode, "dstreg", sz_long, "dst");
            break;
        case i_MVSR2:
            genamode(curi->smode, "srcreg", sz_word, "src", 2, 0);
            printf("\tMakeSR();\n");
            if (curi->size == sz_byte)
                genastore("regs.sr & 0xff", curi->smode, "srcreg", sz_word, "src");
            else
                genastore("regs.sr", curi->smode, "srcreg", sz_word, "src");
            break;
        case i_MV2SR:
            genamode(curi->smode, "srcreg", sz_word, "src", 1, 0);
            if (curi->size == sz_byte)
                printf("\tMakeSR();\n\tregs.sr &= 0xFF00;\n\tregs.sr |= src & 0xFF;\n");
            else
            {
                printf("\tregs.sr = src;\n");
            }
            printf("\tMakeFromSR();\n");
            break;
        case i_SWAP:
            genamode(curi->smode, "srcreg", sz_long, "src", 1, 0);
            start_brace();
            printf("\tuae_u32 dst = ((src >> 16)&0xFFFF) | ((src&0xFFFF)<<16);\n");
            genflags(flag_logical, sz_long, "dst", "", "");
            genastore("dst", curi->smode, "srcreg", sz_long, "src");
            break;
        case i_EXG:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            genastore("dst", curi->smode, "srcreg", curi->size, "src");
            genastore("src", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_EXT:
            genamode(curi->smode, "srcreg", sz_long, "src", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 dst = (uae_s32)(uae_s8)src;\n");
                    break;
                case sz_word: printf("\tuae_u16 dst = (uae_s16)(uae_s8)src;\n");
                    break;
                case sz_long: printf("\tuae_u32 dst = (uae_s32)(uae_s16)src;\n");
                    break;
                default: abort();
            }
            genflags(flag_logical,
            curi->size == sz_word ? sz_word : sz_long, "dst", "", "");
            genastore("dst", curi->smode, "srcreg",
            curi->size == sz_word ? sz_word : sz_long, "src");
            break;
        case i_MVMEL:
            genmovemel(opcode);
            break;
        case i_MVMLE:
            genmovemle(opcode);
            break;
        case i_TRAP:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            sync_m68k_pc();
            printf("\tException(src+32,0);\n");
            m68k_pc_offset = 0;
            break;
        case i_MVR2USP:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            printf("\tregs.usp = src;\n");
            break;
        case i_MVUSP2R:
            genamode(curi->smode, "srcreg", curi->size, "src", 2, 0);
            genastore("regs.usp", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_RESET:
            printf("\tcustomreset();\n");
            break;
        case i_NOP:
            break;
        case i_STOP:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            printf("\tregs.sr = src;\n");
            printf("\tMakeFromSR();\n");
            printf("\tm68k_setstopped(1);\n");
            break;
        case i_RTE:
            if (cpu_level == 0)
            {
                genamode(Aipi, "7", sz_word, "sr", 1, 0);
                genamode(Aipi, "7", sz_long, "pc", 1, 0);
                printf("\tregs.sr = sr; m68k_setpc_rte(pc);\n");
                fill_prefetch_0();
                printf("\tMakeFromSR();\n");
            }
            else
            {
                int old_brace_level = n_braces;
                if (next_cpu_level < 0)
                    next_cpu_level = 0;
                printf("\tuae_u16 newsr; uae_u32 newpc; for (;;) {\n");
                genamode(Aipi, "7", sz_word, "sr", 1, 0);
                genamode(Aipi, "7", sz_long, "pc", 1, 0);
                genamode(Aipi, "7", sz_word, "format", 1, 0);
                printf("\tnewsr = sr; newpc = pc;\n");
                printf("\tif ((format & 0xF000) == 0x0000) { break; }\n");
                printf("\telse if ((format & 0xF000) == 0x1000) { ; }\n");
                printf("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n");
                printf("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n");
                printf("\telse if ((format & 0xF000) == 0x9000) { m68k_areg(regs, 7) += 12; break; }\n");
                printf("\telse if ((format & 0xF000) == 0xa000) { m68k_areg(regs, 7) += 24; break; }\n");
                printf("\telse if ((format & 0xF000) == 0xb000) { m68k_areg(regs, 7) += 84; break; }\n");
                printf("\telse { Exception(14,0); goto %s; }\n", endlabelstr);
                printf("\tregs.sr = newsr; MakeFromSR();\n}\n");
                pop_braces(old_brace_level);
                printf("\tregs.sr = newsr; MakeFromSR();\n");
                printf("\tm68k_setpc_rte(newpc);\n");
                fill_prefetch_0();
                need_endlabel = 1;
            }
            /* PC is set and prefetch filled. */
            m68k_pc_offset = 0;
            break;
        case i_RTD:
            printf("\tcompiler_flush_jsr_stack();\n");
            genamode(Aipi, "7", sz_long, "pc", 1, 0);
            genamode(curi->smode, "srcreg", curi->size, "offs", 1, 0);
            printf("\tm68k_areg(regs, 7) += offs;\n");
            printf("\tm68k_setpc_rte(pc);\n");
            fill_prefetch_0();
            /* PC is set and prefetch filled. */
            m68k_pc_offset = 0;
            break;
        case i_LINK:
            genamode(Apdi, "7", sz_long, "old", 2, 0);
            genamode(curi->smode, "srcreg", sz_long, "src", 1, 0);
            genastore("src", Apdi, "7", sz_long, "old");
            genastore("m68k_areg(regs, 7)", curi->smode, "srcreg", sz_long, "src");
            genamode(curi->dmode, "dstreg", curi->size, "offs", 1, 0);
            printf("\tm68k_areg(regs, 7) += offs;\n");
            break;
        case i_UNLK:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            printf("\tm68k_areg(regs, 7) = src;\n");
            genamode(Aipi, "7", sz_long, "old", 1, 0);
            genastore("old", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_RTS:
            printf("\tm68k_do_rts();\n");
            fill_prefetch_0();
            m68k_pc_offset = 0;
            break;
        case i_TRAPV:
            sync_m68k_pc();
            printf("\tif (GET_VFLG) { Exception(7,m68k_getpc()); goto %s; }\n", endlabelstr);
            need_endlabel = 1;
            break;
        case i_RTR:
            printf("\tcompiler_flush_jsr_stack();\n");
            printf("\tMakeSR();\n");
            genamode(Aipi, "7", sz_word, "sr", 1, 0);
            genamode(Aipi, "7", sz_long, "pc", 1, 0);
            printf("\tregs.sr &= 0xFF00; sr &= 0xFF;\n");
            printf("\tregs.sr |= sr; m68k_setpc(pc);\n");
            fill_prefetch_0();
            printf("\tMakeFromSR();\n");
            m68k_pc_offset = 0;
            break;
        case i_JSR:
            genamode(curi->smode, "srcreg", curi->size, "src", 0, 0);
            printf("\tm68k_do_jsr(m68k_getpc() + %d, srca);\n", m68k_pc_offset);
            fill_prefetch_0();
            m68k_pc_offset = 0;
            break;
        case i_JMP:
            genamode(curi->smode, "srcreg", curi->size, "src", 0, 0);
            printf("\tm68k_setpc(srca);\n");
            fill_prefetch_0();
            m68k_pc_offset = 0;
            break;
        case i_BSR:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            printf("\tuae_s32 s = (uae_s32)src + 2;\n");
            if (using_exception_3)
            {
                printf("\tif (src & 1) {\n");
                printf("\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
                printf("\t\tlast_fault_for_exception_3 = m68k_getpc() + s;\n");
                printf("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
                printf("\t}\n");
                need_endlabel = 1;
            }
            printf("\tm68k_do_bsr(m68k_getpc() + %d, s);\n", m68k_pc_offset);
            fill_prefetch_0();
            m68k_pc_offset = 0;
            break;
        case i_Bcc:
            if (curi->size == sz_long)
            {
                if (cpu_level < 2)
                {
                    printf("\tm68k_incpc(2);\n");
                    printf("\tif (!cctrue(%d)) goto %s;\n", curi->cc, endlabelstr);
                    printf("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
                    printf("\t\tlast_fault_for_exception_3 = m68k_getpc() + 1;\n");
                    printf("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
                    need_endlabel = 1;
                }
                else
                {
                    if (next_cpu_level < 1)
                        next_cpu_level = 1;
                }
            }
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            printf("\tif (!cctrue(%d)) goto didnt_jump;\n", curi->cc);
            if (using_exception_3)
            {
                printf("\tif (src & 1) {\n");
                printf("\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
                printf("\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)src;\n");
                printf("\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
                printf("\t}\n");
                need_endlabel = 1;
            }
#ifdef USE_COMPILER
            printf("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n");
#else
            printf("\tm68k_incpc ((uae_s32)src + 2);\n");
#endif
            fill_prefetch_0();
            printf("\tgoto %s;\n", endlabelstr);
            printf("didnt_jump:;\n");
            need_endlabel = 1;
            break;
        case i_LEA:
            genamode(curi->smode, "srcreg", curi->size, "src", 0, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 2, 0);
            genastore("srca", curi->dmode, "dstreg", curi->size, "dst");
            break;
        case i_PEA:
            genamode(curi->smode, "srcreg", curi->size, "src", 0, 0);
            genamode(Apdi, "7", sz_long, "dst", 2, 0);
            genastore("srca", Apdi, "7", sz_long, "dst");
            break;
        case i_DBcc:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "offs", 1, 0);

            printf("\tif (!cctrue(%d)) {\n", curi->cc);
            genastore("(src-1)", curi->smode, "srcreg", curi->size, "src");

            printf("\t\tif (src) {\n");
            if (using_exception_3)
            {
                printf("\t\t\tif (offs & 1) {\n");
                printf("\t\t\tlast_addr_for_exception_3 = m68k_getpc() + 2;\n");
                printf("\t\t\tlast_fault_for_exception_3 = m68k_getpc() + 2 + (uae_s32)offs + 2;\n");
                printf("\t\t\tlast_op_for_exception_3 = opcode; Exception(3,0); goto %s;\n", endlabelstr);
                printf("\t\t}\n");
                need_endlabel = 1;
            }
#ifdef USE_COMPILER
            printf("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n");
#else
            printf("\t\t\tm68k_incpc((uae_s32)offs + 2);\n");
#endif
            fill_prefetch_0();
            printf("\t\tgoto %s;\n", endlabelstr);
            printf("\t\t}\n");
            printf("\t}\n");
            need_endlabel = 1;
            break;
        case i_Scc:
            genamode(curi->smode, "srcreg", curi->size, "src", 2, 0);
            start_brace();
            printf("\tint val = cctrue(%d) ? 0xff : 0;\n", curi->cc);
            genastore("val", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_DIVU:
            printf("\tuaecptr oldpc = m68k_getpc();\n");
            genamode(curi->smode, "srcreg", sz_word, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_long, "dst", 1, 0);
            printf("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
            printf("\tuae_u32 newv = (uae_u32)dst / (uae_u32)(uae_u16)src;\n");
            printf("\tuae_u32 rem = (uae_u32)dst %% (uae_u32)(uae_u16)src;\n");
            /* The N flag appears to be set each time there is an overflow.
             * Weird. */
            printf("\tif (newv > 0xffff) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
            genflags(flag_logical, sz_word, "newv", "", "");
            printf("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
            genastore("newv", curi->dmode, "dstreg", sz_long, "dst");
            printf("\t}\n");
            printf("\t}\n");
            insn_n_cycles += 68;
            need_endlabel = 1;
            break;
        case i_DIVS:
            printf("\tuaecptr oldpc = m68k_getpc();\n");
            genamode(curi->smode, "srcreg", sz_word, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_long, "dst", 1, 0);
            printf("\tif(src == 0) { Exception(5,oldpc); goto %s; } else {\n", endlabelstr);
            printf("\tuae_s32 newv = (uae_s32)dst / (uae_s32)(uae_s16)src;\n");
            printf("\tuae_u16 rem = (uae_s32)dst %% (uae_s32)(uae_s16)src;\n");
            printf("\tif ((newv & 0xffff8000) != 0 && (newv & 0xffff8000) != 0xffff8000) { SET_VFLG (1); SET_NFLG (1); SET_CFLG (0); } else\n\t{\n");
            printf("\tif (((uae_s16)rem < 0) != ((uae_s32)dst < 0)) rem = -rem;\n");
            genflags(flag_logical, sz_word, "newv", "", "");
            printf("\tnewv = (newv & 0xffff) | ((uae_u32)rem << 16);\n");
            genastore("newv", curi->dmode, "dstreg", sz_long, "dst");
            printf("\t}\n");
            printf("\t}\n");
            insn_n_cycles += 72;
            need_endlabel = 1;
            break;
        case i_MULU:
            genamode(curi->smode, "srcreg", sz_word, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_word, "dst", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = (uae_u32)(uae_u16)dst * (uae_u32)(uae_u16)src;\n");
            genflags(flag_logical, sz_long, "newv", "", "");
            genastore("newv", curi->dmode, "dstreg", sz_long, "dst");
            insn_n_cycles += 32;
            break;
        case i_MULS:
            genamode(curi->smode, "srcreg", sz_word, "src", 1, 0);
            genamode(curi->dmode, "dstreg", sz_word, "dst", 1, 0);
            start_brace();
            printf("\tuae_u32 newv = (uae_s32)(uae_s16)dst * (uae_s32)(uae_s16)src;\n");
            genflags(flag_logical, sz_long, "newv", "", "");
            genastore("newv", curi->dmode, "dstreg", sz_long, "dst");
            insn_n_cycles += 32;
            break;
        case i_CHK:
            printf("\tuaecptr oldpc = m68k_getpc();\n");
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            printf("\tif ((uae_s32)dst < 0) { SET_NFLG (1); Exception(6,oldpc); goto %s; }\n", endlabelstr);
            printf("\telse if (dst > src) { SET_NFLG (0); Exception(6,oldpc); goto %s; }\n", endlabelstr);
            need_endlabel = 1;
            break;

        case i_CHK2:
            printf("\tuaecptr oldpc = m68k_getpc();\n");
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 2, 0);
            printf("\t{uae_s32 upper,lower,reg = regs.regs[(extra >> 12) & 15];\n");
            switch (curi->size)
            {
                case sz_byte:
                    printf("\tlower=(uae_s32)(uae_s8)get_byte(dsta); upper = (uae_s32)(uae_s8)get_byte(dsta+1);\n");
                    printf("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s8)reg;\n");
                    break;
                case sz_word:
                    printf("\tlower=(uae_s32)(uae_s16)get_word(dsta); upper = (uae_s32)(uae_s16)get_word(dsta+2);\n");
                    printf("\tif ((extra & 0x8000) == 0) reg = (uae_s32)(uae_s16)reg;\n");
                    break;
                case sz_long:
                    printf("\tlower=get_long(dsta); upper = get_long(dsta+4);\n");
                    break;
                default:
                    abort();
            }
            printf("\tSET_ZFLG (upper == reg || lower == reg);\n");
            printf("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n");
            printf("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr);
            need_endlabel = 1;
            break;

        case i_ASR:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 sign = (%s & val) >> %d;\n", cmask(curi->size), bit_size(curi->size) - 1);
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            printf("\tif (cnt >= %d) {\n", bit_size(curi->size));
            printf("\t\tval = %s & (uae_u32)-sign;\n", bit_mask(curi->size));
            printf("\t\tSET_CFLG (sign);\n");
            duplicate_carry();
            if (source_is_imm1_8(curi))
                printf("\t} else {\n");
            else
                printf("\t} else if (cnt > 0) {\n");
            printf("\t\tval >>= cnt - 1;\n");
            printf("\t\tSET_CFLG (val & 1);\n");
            duplicate_carry();
            printf("\t\tval >>= 1;\n");
            printf("\t\tval |= (%s << (%d - cnt)) & (uae_u32)-sign;\n",
            bit_mask(curi->size),
            bit_size(curi->size));
            printf("\t\tval &= %s;\n", bit_mask(curi->size));
            printf("\t}\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_ASL:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            printf("\tif (cnt >= %d) {\n", bit_size(curi->size));
            printf("\t\tSET_VFLG (val != 0);\n");
            printf("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
            bit_size(curi->size));
            duplicate_carry();
            printf("\t\tval = 0;\n");
            if (source_is_imm1_8(curi))
                printf("\t} else {\n");
            else
                printf("\t} else if (cnt > 0) {\n");
            printf("\t\tuae_u32 mask = (%s << (%d - cnt)) & %s;\n",
            bit_mask(curi->size),
            bit_size(curi->size) - 1,
            bit_mask(curi->size));
            printf("\t\tSET_VFLG ((val & mask) != mask && (val & mask) != 0);\n");
            printf("\t\tval <<= cnt - 1;\n");
            printf("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask(curi->size), bit_size(curi->size) - 1);
            duplicate_carry();
            printf("\t\tval <<= 1;\n");
            printf("\t\tval &= %s;\n", bit_mask(curi->size));
            printf("\t}\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_LSR:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            printf("\tif (cnt >= %d) {\n", bit_size(curi->size));
            printf("\t\tSET_CFLG ((cnt == %d) & (val >> %d));\n",
            bit_size(curi->size), bit_size(curi->size) - 1);
            duplicate_carry();
            printf("\t\tval = 0;\n");
            if (source_is_imm1_8(curi))
                printf("\t} else {\n");
            else
                printf("\t} else if (cnt > 0) {\n");
            printf("\t\tval >>= cnt - 1;\n");
            printf("\t\tSET_CFLG (val & 1);\n");
            duplicate_carry();
            printf("\t\tval >>= 1;\n");
            printf("\t}\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_LSL:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            printf("\tif (cnt >= %d) {\n", bit_size(curi->size));
            printf("\t\tSET_CFLG (cnt == %d ? val & 1 : 0);\n",
            bit_size(curi->size));
            duplicate_carry();
            printf("\t\tval = 0;\n");
            if (source_is_imm1_8(curi))
                printf("\t} else {\n");
            else
                printf("\t} else if (cnt > 0) {\n");
            printf("\t\tval <<= (cnt - 1);\n");
            printf("\t\tSET_CFLG ((val & %s) >> %d);\n", cmask(curi->size), bit_size(curi->size) - 1);
            duplicate_carry();
            printf("\t\tval <<= 1;\n");
            printf("\tval &= %s;\n", bit_mask(curi->size));
            printf("\t}\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_ROL:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            if (source_is_imm1_8(curi))
                printf("{");
            else
                printf("\tif (cnt > 0) {\n");
            printf("\tuae_u32 loval;\n");
            printf("\tcnt &= %d;\n", bit_size(curi->size) - 1);
            printf("\tloval = val >> (%d - cnt);\n", bit_size(curi->size));
            printf("\tval <<= cnt;\n");
            printf("\tval |= loval;\n");
            printf("\tval &= %s;\n", bit_mask(curi->size));
            printf("\tSET_CFLG (val & 1);\n");
            printf("}\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_ROR:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            if (source_is_imm1_8(curi))
                printf("{");
            else
                printf("\tif (cnt > 0) {");
            printf("\tuae_u32 hival;\n");
            printf("\tcnt &= %d;\n", bit_size(curi->size) - 1);
            printf("\thival = val << (%d - cnt);\n", bit_size(curi->size));
            printf("\tval >>= cnt;\n");
            printf("\tval |= hival;\n");
            printf("\tval &= %s;\n", bit_mask(curi->size));
            printf("\tSET_CFLG ((val & %s) >> %d);\n", cmask(curi->size), bit_size(curi->size) - 1);
            printf("\t}\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_ROXL:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            if (!source_is_imm1_8(curi))
                force_range_for_rox("cnt", curi->size);
            if (source_is_imm1_8(curi))
                printf("{");
            else
                printf("\tif (cnt > 0) {\n");
            printf("\tcnt--;\n");
            printf("\t{\n\tuae_u32 carry;\n");
            printf("\tuae_u32 loval = val >> (%d - cnt);\n", bit_size(curi->size) - 1);
            printf("\tcarry = loval & 1;\n");
            printf("\tval = (((val << 1) | GET_XFLG) << cnt) | (loval >> 1);\n");
            printf("\tSET_XFLG (carry);\n");
            printf("\tval &= %s;\n", bit_mask(curi->size));
            printf("\t} }\n");
            printf("\tSET_CFLG (GET_XFLG);\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_ROXR:
            genamode(curi->smode, "srcreg", curi->size, "cnt", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tcnt &= 63;\n");
            printf("\tCLEAR_CZNV;\n");
            if (!source_is_imm1_8(curi))
                force_range_for_rox("cnt", curi->size);
            if (source_is_imm1_8(curi))
                printf("{");
            else
                printf("\tif (cnt > 0) {\n");
            printf("\tcnt--;\n");
            printf("\t{\n\tuae_u32 carry;\n");
            printf("\tuae_u32 hival = (val << 1) | GET_XFLG;\n");
            printf("\thival <<= (%d - cnt);\n", bit_size(curi->size) - 1);
            printf("\tval >>= cnt;\n");
            printf("\tcarry = val & 1;\n");
            printf("\tval >>= 1;\n");
            printf("\tval |= hival;\n");
            printf("\tSET_XFLG (carry);\n");
            printf("\tval &= %s;\n", bit_mask(curi->size));
            printf("\t} }\n");
            printf("\tSET_CFLG (GET_XFLG);\n");
            genflags(flag_logical_noclobber, curi->size, "val", "", "");
            genastore("val", curi->dmode, "dstreg", curi->size, "data");
            break;
        case i_ASRW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 sign = %s & val;\n", cmask(curi->size));
            printf("\tuae_u32 cflg = val & 1;\n");
            printf("\tval = (val >> 1) | sign;\n");
            genflags(flag_logical, curi->size, "val", "", "");
            printf("\tSET_CFLG (cflg);\n");
            duplicate_carry();
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_ASLW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 sign = %s & val;\n", cmask(curi->size));
            printf("\tuae_u32 sign2;\n");
            printf("\tval <<= 1;\n");
            genflags(flag_logical, curi->size, "val", "", "");
            printf("\tsign2 = %s & val;\n", cmask(curi->size));
            printf("\tSET_CFLG (sign != 0);\n");
            duplicate_carry();

            printf("\tSET_VFLG (GET_VFLG | (sign2 != sign));\n");
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_LSRW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u32 val = (uae_u8)data;\n");
                    break;
                case sz_word: printf("\tuae_u32 val = (uae_u16)data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 carry = val & 1;\n");
            printf("\tval >>= 1;\n");
            genflags(flag_logical, curi->size, "val", "", "");
            printf("SET_CFLG (carry);\n");
            duplicate_carry();
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_LSLW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u8 val = data;\n");
                    break;
                case sz_word: printf("\tuae_u16 val = data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 carry = val & %s;\n", cmask(curi->size));
            printf("\tval <<= 1;\n");
            genflags(flag_logical, curi->size, "val", "", "");
            printf("SET_CFLG (carry >> %d);\n", bit_size(curi->size) - 1);
            duplicate_carry();
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_ROLW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u8 val = data;\n");
                    break;
                case sz_word: printf("\tuae_u16 val = data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 carry = val & %s;\n", cmask(curi->size));
            printf("\tval <<= 1;\n");
            printf("\tif (carry)  val |= 1;\n");
            genflags(flag_logical, curi->size, "val", "", "");
            printf("SET_CFLG (carry >> %d);\n", bit_size(curi->size) - 1);
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_RORW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u8 val = data;\n");
                    break;
                case sz_word: printf("\tuae_u16 val = data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 carry = val & 1;\n");
            printf("\tval >>= 1;\n");
            printf("\tif (carry) val |= %s;\n", cmask(curi->size));
            genflags(flag_logical, curi->size, "val", "", "");
            printf("SET_CFLG (carry);\n");
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_ROXLW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u8 val = data;\n");
                    break;
                case sz_word: printf("\tuae_u16 val = data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 carry = val & %s;\n", cmask(curi->size));
            printf("\tval <<= 1;\n");
            printf("\tif (GET_XFLG) val |= 1;\n");
            genflags(flag_logical, curi->size, "val", "", "");
            printf("SET_CFLG (carry >> %d);\n", bit_size(curi->size) - 1);
            duplicate_carry();
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_ROXRW:
            genamode(curi->smode, "srcreg", curi->size, "data", 1, 0);
            start_brace();
            switch (curi->size)
            {
                case sz_byte: printf("\tuae_u8 val = data;\n");
                    break;
                case sz_word: printf("\tuae_u16 val = data;\n");
                    break;
                case sz_long: printf("\tuae_u32 val = data;\n");
                    break;
                default: abort();
            }
            printf("\tuae_u32 carry = val & 1;\n");
            printf("\tval >>= 1;\n");
            printf("\tif (GET_XFLG) val |= %s;\n", cmask(curi->size));
            genflags(flag_logical, curi->size, "val", "", "");
            printf("SET_CFLG (carry);\n");
            duplicate_carry();
            genastore("val", curi->smode, "srcreg", curi->size, "data");
            break;
        case i_MOVEC2:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            start_brace();
            printf("\tint regno = (src >> 12) & 15;\n");
            printf("\tuae_u32 *regp = regs.regs + regno;\n");
            printf("\tm68k_movec2(src & 0xFFF, regp);\n");
            break;
        case i_MOVE2C:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            start_brace();
            printf("\tint regno = (src >> 12) & 15;\n");
            printf("\tuae_u32 *regp = regs.regs + regno;\n");
            printf("\tm68k_move2c(src & 0xFFF, regp);\n");
            break;
        case i_CAS:
        {
            int old_brace_level;
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            start_brace();
            printf("\tint ru = (src >> 6) & 7;\n");
            printf("\tint rc = src & 7;\n");
            genflags(flag_cmp, curi->size, "newv", "m68k_dreg(regs, rc)", "dst");
            printf("\tif (GET_ZFLG)");
            old_brace_level = n_braces;
            start_brace();
            genastore("(m68k_dreg(regs, ru))", curi->dmode, "dstreg", curi->size, "dst");
            pop_braces(old_brace_level);
            printf("else");
            start_brace();
            printf("m68k_dreg(regs, rc) = dst;\n");
            pop_braces(old_brace_level);
        }
        break;
        case i_CAS2:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            printf("\tuae_u32 rn1 = regs.regs[(extra >> 28) & 7];\n");
            printf("\tuae_u32 rn2 = regs.regs[(extra >> 12) & 7];\n");
            if (curi->size == sz_word)
            {
                int old_brace_level = n_braces;
                printf("\tuae_u16 dst1 = get_word(rn1), dst2 = get_word(rn2);\n");
                genflags(flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
                printf("\tif (GET_ZFLG) {\n");
                genflags(flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
                printf("\tif (GET_ZFLG) {\n");
                printf("\tput_word(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
                printf("\tput_word(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
                printf("\t}}\n");
                pop_braces(old_brace_level);
                printf("\tif (! GET_ZFLG) {\n");
                printf("\tm68k_dreg(regs, (extra >> 22) & 7) = (m68k_dreg(regs, (extra >> 22) & 7) & ~0xffff) | (dst1 & 0xffff);\n");
                printf("\tm68k_dreg(regs, (extra >> 6) & 7) = (m68k_dreg(regs, (extra >> 6) & 7) & ~0xffff) | (dst2 & 0xffff);\n");
                printf("\t}\n");
            }
            else
            {
                int old_brace_level = n_braces;
                printf("\tuae_u32 dst1 = get_long(rn1), dst2 = get_long(rn2);\n");
                genflags(flag_cmp, curi->size, "newv", "m68k_dreg(regs, (extra >> 16) & 7)", "dst1");
                printf("\tif (GET_ZFLG) {\n");
                genflags(flag_cmp, curi->size, "newv", "m68k_dreg(regs, extra & 7)", "dst2");
                printf("\tif (GET_ZFLG) {\n");
                printf("\tput_long(rn1, m68k_dreg(regs, (extra >> 22) & 7));\n");
                printf("\tput_long(rn1, m68k_dreg(regs, (extra >> 6) & 7));\n");
                printf("\t}}\n");
                pop_braces(old_brace_level);
                printf("\tif (! GET_ZFLG) {\n");
                printf("\tm68k_dreg(regs, (extra >> 22) & 7) = dst1;\n");
                printf("\tm68k_dreg(regs, (extra >> 6) & 7) = dst2;\n");
                printf("\t}\n");
            }
            break;
        case i_MOVES:           /* ignore DFC and SFC because we have no MMU */
        {
            int old_brace_level;
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            printf("\tif (extra & 0x800)\n");
            old_brace_level = n_braces;
            start_brace();
            printf("\tuae_u32 src = regs.regs[(extra >> 12) & 15];\n");
            genamode(curi->dmode, "dstreg", curi->size, "dst", 2, 0);
            genastore("src", curi->dmode, "dstreg", curi->size, "dst");
            pop_braces(old_brace_level);
            printf("else");
            start_brace();
            genamode(curi->dmode, "dstreg", curi->size, "src", 1, 0);
            printf("\tif (extra & 0x8000) {\n");
            switch (curi->size)
            {
                case sz_byte: printf("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s8)src;\n");
                    break;
                case sz_word: printf("\tm68k_areg(regs, (extra >> 12) & 7) = (uae_s32)(uae_s16)src;\n");
                    break;
                case sz_long: printf("\tm68k_areg(regs, (extra >> 12) & 7) = src;\n");
                    break;
                default: abort();
            }
            printf("\t} else {\n");
            genastore("src", Dreg, "(extra >> 12) & 7", curi->size, "");
            printf("\t}\n");
            pop_braces(old_brace_level);
        }
        break;
        case i_BKPT:            /* only needed for hardware emulators */
            sync_m68k_pc();
            printf("\top_illg(opcode);\n");
            break;
        case i_CALLM:           /* not present in 68030 */
            sync_m68k_pc();
            printf("\top_illg(opcode);\n");
            break;
        case i_RTM:             /* not present in 68030 */
            sync_m68k_pc();
            printf("\top_illg(opcode);\n");
            break;
        case i_TRAPcc:
            if (curi->smode != am_unknown && curi->smode != am_illg)
                genamode(curi->smode, "srcreg", curi->size, "dummy", 1, 0);
            printf("\tif (cctrue(%d)) { Exception(7,m68k_getpc()); goto %s; }\n", curi->cc, endlabelstr);
            need_endlabel = 1;
            break;
        case i_DIVL:
            sync_m68k_pc();
            start_brace();
            printf("\tuaecptr oldpc = m68k_getpc();\n");
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            sync_m68k_pc();
            printf("\tm68k_divl(opcode, dst, extra, oldpc);\n");
            break;
        case i_MULL:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            genamode(curi->dmode, "dstreg", curi->size, "dst", 1, 0);
            sync_m68k_pc();
            printf("\tm68k_mull(opcode, dst, extra);\n");
            break;
        case i_BFTST:
        case i_BFEXTU:
        case i_BFCHG:
        case i_BFEXTS:
        case i_BFCLR:
        case i_BFFFO:
        case i_BFSET:
        case i_BFINS:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            genamode(curi->dmode, "dstreg", sz_long, "dst", 2, 0);
            start_brace();
            printf("\tuae_s32 offset = extra & 0x800 ? m68k_dreg(regs, (extra >> 6) & 7) : (extra >> 6) & 0x1f;\n");
            printf("\tint width = (((extra & 0x20 ? m68k_dreg(regs, extra & 7) : extra) -1) & 0x1f) +1;\n");
            if (curi->dmode == Dreg)
            {
                printf("\tuae_u32 tmp = m68k_dreg(regs, dstreg) << (offset & 0x1f);\n");
            }
            else
            {
                printf("\tuae_u32 tmp,bf0,bf1;\n");
                printf("\tdsta += (offset >> 3) | (offset & 0x80000000 ? ~0x1fffffff : 0);\n");
                printf("\tbf0 = get_long(dsta);bf1 = get_byte(dsta+4) & 0xff;\n");
                printf("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n");
            }
            printf("\ttmp >>= (32 - width);\n");
            printf("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n");
            printf("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n");
            switch (curi->mnemo)
            {
                case i_BFTST:
                    break;
                case i_BFEXTU:
                    printf("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
                    break;
                case i_BFCHG:
                    printf("\ttmp = ~tmp;\n");
                    break;
                case i_BFEXTS:
                    printf("\tif (GET_NFLG) tmp |= width == 32 ? 0 : (-1 << width);\n");
                    printf("\tm68k_dreg(regs, (extra >> 12) & 7) = tmp;\n");
                    break;
                case i_BFCLR:
                    printf("\ttmp = 0;\n");
                    break;
                case i_BFFFO:
                    printf("\t{ uae_u32 mask = 1 << (width-1);\n");
                    printf("\twhile (mask) { if (tmp & mask) break; mask >>= 1; offset++; }}\n");
                    printf("\tm68k_dreg(regs, (extra >> 12) & 7) = offset;\n");
                    break;
                case i_BFSET:
                    printf("\ttmp = 0xffffffff;\n");
                    break;
                case i_BFINS:
                    printf("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n");
                    break;
                default:
                    break;
            }
            if (curi->mnemo == i_BFCHG
            || curi->mnemo == i_BFCLR
            || curi->mnemo == i_BFSET
            || curi->mnemo == i_BFINS)
            {
                printf("\ttmp <<= (32 - width);\n");
                if (curi->dmode == Dreg)
                {
                    printf("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & ((offset & 0x1f) == 0 ? 0 :\n");
                    printf("\t\t(0xffffffff << (32 - (offset & 0x1f))))) |\n");
                    printf("\t\t(tmp >> (offset & 0x1f)) |\n");
                    printf("\t\t(((offset & 0x1f) + width) >= 32 ? 0 :\n");
                    printf(" (m68k_dreg(regs, dstreg) & ((uae_u32)0xffffffff >> ((offset & 0x1f) + width))));\n");
                }
                else
                {
                    printf("\tbf0 = (bf0 & (0xff000000 << (8 - (offset & 7)))) |\n");
                    printf("\t\t(tmp >> (offset & 7)) |\n");
                    printf("\t\t(((offset & 7) + width) >= 32 ? 0 :\n");
                    printf("\t\t (bf0 & ((uae_u32)0xffffffff >> ((offset & 7) + width))));\n");
                    printf("\tput_long(dsta,bf0 );\n");
                    printf("\tif (((offset & 7) + width) > 32) {\n");
                    printf("\t\tbf1 = (bf1 & (0xff >> (width - 32 + (offset & 7)))) |\n");
                    printf("\t\t\t(tmp << (8 - (offset & 7)));\n");
                    printf("\t\tput_byte(dsta+4,bf1);\n");
                    printf("\t}\n");
                }
            }
            break;
        case i_PACK:
            if (curi->smode == Dreg)
            {
                printf("\tuae_u16 val = m68k_dreg(regs, srcreg) + %s;\n", gen_nextiword());
                printf("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffffff00) | ((val >> 4) & 0xf0) | (val & 0xf);\n");
            }
            else
            {
                printf("\tuae_u16 val;\n");
                printf("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
                printf("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
                printf("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
                printf("\tval = (val | ((uae_u16)get_byte(m68k_areg(regs, srcreg)) << 8)) + %s;\n", gen_nextiword());
                printf("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
                printf("\tput_byte(m68k_areg(regs, dstreg),((val >> 4) & 0xf0) | (val & 0xf));\n");
            }
            break;
        case i_UNPK:
            if (curi->smode == Dreg)
            {
                printf("\tuae_u16 val = m68k_dreg(regs, srcreg);\n");
                printf("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword());
                printf("\tm68k_dreg(regs, dstreg) = (m68k_dreg(regs, dstreg) & 0xffff0000) | (val & 0xffff);\n");
            }
            else
            {
                printf("\tuae_u16 val;\n");
                printf("\tm68k_areg(regs, srcreg) -= areg_byteinc[srcreg];\n");
                printf("\tval = (uae_u16)get_byte(m68k_areg(regs, srcreg));\n");
                printf("\tval = (((val << 4) & 0xf00) | (val & 0xf)) + %s;\n", gen_nextiword());
                printf("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
                printf("\tput_byte(m68k_areg(regs, dstreg),val);\n");
                printf("\tm68k_areg(regs, dstreg) -= areg_byteinc[dstreg];\n");
                printf("\tput_byte(m68k_areg(regs, dstreg),val >> 8);\n");
            }
            break;
        case i_TAS:
            genamode(curi->smode, "srcreg", curi->size, "src", 1, 0);
            genflags(flag_logical, curi->size, "src", "", "");
            printf("\tsrc |= 0x80;\n");
            genastore("src", curi->smode, "srcreg", curi->size, "src");
            break;
        case i_FPP:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            sync_m68k_pc();
            swap_opcode();
            printf("\tfpp_opp(opcode,extra);\n");
            break;
        case i_FDBcc:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            sync_m68k_pc();
            swap_opcode();
            printf("\tfdbcc_opp(opcode,extra);\n");
            break;
        case i_FScc:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            sync_m68k_pc();
            swap_opcode();
            printf("\tfscc_opp(opcode,extra);\n");
            break;
        case i_FTRAPcc:
            sync_m68k_pc();
            start_brace();
            printf("\tuaecptr oldpc = m68k_getpc();\n");
            if (curi->smode != am_unknown && curi->smode != am_illg)
                genamode(curi->smode, "srcreg", curi->size, "dummy", 1, 0);
            sync_m68k_pc();
            swap_opcode();
            printf("\tftrapcc_opp(opcode,oldpc);\n");
            break;
        case i_FBcc:
            sync_m68k_pc();
            start_brace();
            printf("\tuaecptr pc = m68k_getpc();\n");
            genamode(curi->dmode, "srcreg", curi->size, "extra", 1, 0);
            sync_m68k_pc();
            swap_opcode();
            printf("\tfbcc_opp(opcode,pc,extra);\n");
            break;
        case i_FSAVE:
            sync_m68k_pc();
            swap_opcode();
            printf("\tfsave_opp(opcode);\n");
            break;
        case i_FRESTORE:
            sync_m68k_pc();
            swap_opcode();
            printf("\tfrestore_opp(opcode);\n");
            break;
        case i_MMUOP:
            genamode(curi->smode, "srcreg", curi->size, "extra", 1, 0);
            sync_m68k_pc();
            swap_opcode();
            printf("\tmmu_op(opcode,extra);\n");
            break;
        default:
            abort();
            break;
    }
    finish_braces();
    sync_m68k_pc();
}

static void generate_includes(FILE* f)
{
    fprintf(f, "#include \"sysconfig.h\"\n");
    fprintf(f, "#include \"sysdeps.h\"\n");
    fprintf(f, "#include \"options.h\"\n");
    fprintf(f, "#include \"memory.h\"\n");
    fprintf(f, "#include \"custom.h\"\n");
    fprintf(f, "#include \"readcpu.h\"\n");
    fprintf(f, "#include \"newcpu.h\"\n");
    fprintf(f, "#include \"compiler.h\"\n");
    fprintf(f, "#include \"cputbl.h\"\n");
}

static int postfix;

static void generate_one_opcode(int rp)
{
    int i;
    uae_u16 smsk, dmsk;
    long int opcode = opcode_map[rp];

    if (table68k[opcode].mnemo == i_ILLG
        || table68k[opcode].clev > cpu_level)
        return;

    for (i = 0; lookuptab[i].name[0]; i++)
    {
        if (table68k[opcode].mnemo == lookuptab[i].mnemo)
            break;
    }

    if (table68k[opcode].handler != -1)
        return;

    if (opcode_next_clev[rp] != cpu_level)
    {
        fprintf(stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp],
            opcode, lookuptab[i].name);
        return;
    }
    fprintf(stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name);
    fprintf(headerfile, "extern cpuop_func op_%lx_%d;\n", opcode, postfix);
    printf("unsigned long REGPARAM2 op_%lx_%d(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name);

    switch (table68k[opcode].stype)
    {
        case 0: smsk = 7;
            break;
        case 1: smsk = 255;
            break;
        case 2: smsk = 15;
            break;
        case 3: smsk = 7;
            break;
        case 4: smsk = 7;
            break;
        case 5: smsk = 63;
            break;
        default: abort();
    }
    dmsk = 7;

    next_cpu_level = -1;
    if (table68k[opcode].suse
        && table68k[opcode].smode != imm && table68k[opcode].smode != imm0
        && table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2
        && table68k[opcode].smode != absw && table68k[opcode].smode != absl
        && table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16)
    {
        if (table68k[opcode].spos == -1)
        {
            if (((int) table68k[opcode].sreg) >= 128)
                printf("\tuae_u32 srcreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].sreg);
            else
                printf("\tuae_u32 srcreg = %d;\n", (int) table68k[opcode].sreg);
        }
        else
        {
            char source[100];
            int pos = table68k[opcode].spos;

#if 0
            /* Check that we can do the little endian optimization safely.  */
            if (pos < 8 && (smsk >> (8 - pos)) != 0)
                abort();
#endif
            printf("#ifdef HAVE_GET_WORD_UNSWAPPED\n");

            if (pos < 8 && (smsk >> (8 - pos)) != 0)
                sprintf(source, "(((opcode >> %d) | (opcode << %d)) & %d)",
                    pos ^ 8, 8 - pos, dmsk);
            else if (pos != 8)
                sprintf(source, "((opcode >> %d) & %d)", pos ^ 8, smsk);
            else
                sprintf(source, "(opcode & %d)", smsk);

            if (table68k[opcode].stype == 3)
                printf("\tuae_u32 srcreg = imm8_table[%s];\n", source);
            else if (table68k[opcode].stype == 1)
                printf("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
            else
                printf("\tuae_u32 srcreg = %s;\n", source);

            printf("#else\n");

            if (pos)
                sprintf(source, "((opcode >> %d) & %d)", pos, smsk);
            else
                sprintf(source, "(opcode & %d)", smsk);

            if (table68k[opcode].stype == 3)
                printf("\tuae_u32 srcreg = imm8_table[%s];\n", source);
            else if (table68k[opcode].stype == 1)
                printf("\tuae_u32 srcreg = (uae_s32)(uae_s8)%s;\n", source);
            else
                printf("\tuae_u32 srcreg = %s;\n", source);

            printf("#endif\n");
        }
    }
    if (table68k[opcode].duse
        /* Yes, the dmode can be imm, in case of LINK or DBcc */
        && table68k[opcode].dmode != imm && table68k[opcode].dmode != imm0
        && table68k[opcode].dmode != imm1 && table68k[opcode].dmode != imm2
        && table68k[opcode].dmode != absw && table68k[opcode].dmode != absl)
    {
        if (table68k[opcode].dpos == -1)
        {
            if (((int) table68k[opcode].dreg) >= 128)
                printf("\tuae_u32 dstreg = (uae_s32)(uae_s8)%d;\n", (int) table68k[opcode].dreg);
            else
                printf("\tuae_u32 dstreg = %d;\n", (int) table68k[opcode].dreg);
        }
        else
        {
            int pos = table68k[opcode].dpos;
#if 0
            /* Check that we can do the little endian optimization safely.  */
            if (pos < 8 && (dmsk >> (8 - pos)) != 0)
                abort();
#endif
            printf("#ifdef HAVE_GET_WORD_UNSWAPPED\n");

            if (pos < 8 && (dmsk >> (8 - pos)) != 0)
                printf("\tuae_u32 dstreg = ((opcode >> %d) | (opcode << %d)) & %d;\n",
                    pos ^ 8, 8 - pos, dmsk);
            else if (pos != 8)
                printf("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
                    pos ^ 8, dmsk);
            else
                printf("\tuae_u32 dstreg = opcode & %d;\n", dmsk);

            printf("#else\n");

            if (pos)
                printf("\tuae_u32 dstreg = (opcode >> %d) & %d;\n",
                    pos, dmsk);
            else
                printf("\tuae_u32 dstreg = opcode & %d;\n", dmsk);

            printf("#endif\n");
        }
    }
    need_endlabel = 0;
    endlabelno++;
    sprintf(endlabelstr, "endlabel%d", endlabelno);
    gen_opcode(opcode);
    if (need_endlabel)
        printf("%s: ;\n", endlabelstr);
    printf("return %d;\n", insn_n_cycles);
    printf("}\n");
    opcode_next_clev[rp] = next_cpu_level;
    opcode_last_postfix[rp] = postfix;
}

static void generate_func(void)
{
    int i, j, rp;

    using_prefetch = 0;
    using_exception_3 = 0;
    for (i = 0; i < 5; i++)
    {
        cpu_level = 3 - i;
        if (i == 4)
        {
            cpu_level = 0;
            using_prefetch = 1;
            using_exception_3 = 1;
            for (rp = 0; rp < nr_cpuop_funcs; rp++)
                opcode_next_clev[rp] = 0;
        }
        postfix = i;
        fprintf(stblfile, "struct cputbl op_smalltbl_%d[] = {\n", postfix);

        /* sam: this is for people with low memory (eg. me :)) */
        printf("\n"
            "#if !defined(PART_1) && !defined(PART_2) && "
            "!defined(PART_3) && !defined(PART_4) && "
            "!defined(PART_5) && !defined(PART_6) && "
            "!defined(PART_7) && !defined(PART_8)"
            "\n"
            "#define PART_1 1\n"
            "#define PART_2 1\n"
            "#define PART_3 1\n"
            "#define PART_4 1\n"
            "#define PART_5 1\n"
            "#define PART_6 1\n"
            "#define PART_7 1\n"
            "#define PART_8 1\n"
            "#endif\n\n");

        rp = 0;
        for (j = 1; j <= 8; ++j)
        {
            int k = (j * nr_cpuop_funcs) / 8;
            printf("#ifdef PART_%d\n", j);
            for (; rp < k; rp++)
                generate_one_opcode(rp);
            printf("#endif\n\n");
        }

        fprintf(stblfile, "{ 0, 0, 0 }};\n");
    }
}

int main(int argc, char** argv)
{
    read_table68k();
    do_merges();

    opcode_map = (int*) xmalloc(sizeof(int) * nr_cpuop_funcs);
    opcode_last_postfix = (int*) xmalloc(sizeof(int) * nr_cpuop_funcs);
    opcode_next_clev = (int*) xmalloc(sizeof(int) * nr_cpuop_funcs);
    counts = (unsigned long*) xmalloc(65536 * sizeof(unsigned long));
    read_counts();

    /* It would be a lot nicer to put all in one file (we'd also get rid of
     * cputbl.h that way), but cpuopti can't cope.  That could be fixed, but
     * I don't dare to touch the 68k version.  */

    headerfile = fopen("cputbl.h", "wb");
    stblfile = fopen("cpustbl.c", "wb");
    freopen("cpuemu.c", "wb", stdout);

    generate_includes(stdout);
    generate_includes(stblfile);

    generate_func();

    free(table68k);
    return 0;
}